I'm hopefully going on safari to Kenya next year. I'm looking for a lens that will complement my 100-400L nicely. I'm thinking 70-200 f2.8 L what do you think? I'm open to any brand obviously if they are good. It is about £1250 at the moment, my maximum budget will be about that really so no prime suggestions please thanks!! I need to know what sort of price I'm looking at so I know how many banks to rob beforehand!!

the 100 will certainly be still too long in some cases, and so might the 70 ... unless you want to shoot purely wildlife at some distance. but there are landscapes too and you might want a herd of animals in a wide landscape ... so 70mm can be still too long then.

on the other hand the 2.8 would help.

still, I personally would complement it with a 24-70mm f/2.8 L ... but it all depends on your personal shooting habits.

Why? the 100-400 covers most of the same are ans goes longer? Unless you're going to replace it, than I wouldn't buy the 70-200, like what Alex said, the 24-70 would be a better option. Maybe even the 17-55 IS.

You appear to have the long end covered already. Although I can see that an f2.8 would appeal with the faster apperture.
The short end does seem a little lacking though. I have just bought the 17-85 IS USM and it is (IMHO) a belter. Although you still have the f4/5.6 max appertures. It is instantainiously recognisable as MUCH sharper than the 18 - 55 kit lens. And does have a good reach that almost closes the gap.

yeah your totally right!! I don't know where my brain was blonde moment maybe? I'm sure at some point it would have dawned on me I need a decent lens for landscape but when I don't know LOL must say I've very tempted by the 24-70mm f/2.8 L I looked up some examples of images on Flickr and well WOW somes it up. Thanks!! Anyone here use this lens? if so would love to see some of your work. Thanks again.

The 24-70 F2.8 L is one of Canon's best lenses. A very useful focal range on film or 'full frame digital'.

However, it's kind of a weird focal length on a camera like yours. Only because 24mm isn't wide like it is on a film camera. I'll second the recommendation for the 17-55 F2.8 IS, if you can afford it. Alternatively, the 17-85 IS, is a good lens just not as fast as the first one. Yet another option might be the Tamron 17-50 F2.8 or the Sigma 18-50 F2.8.

I would second the opinions about a good quality wide angle. Either 24 - 70 or 17 - 85 IS...

One other thing you might like to consider is a second body.
If you have two bodies, one with your wide angle zoom and the other with the long zoom, then you won´t waste time (and miss shots) by fiddling around changing lenses.
Remember that the scenery and wildlife and light will be changing fast...and it´s easy to drop things or get dust in the bodies when you are trying to change lenses in a hurry.
You will also need a small bean bag (do you know why?)

I am also planning a trip to Africa next spring and started to compile the equipment I want to pack. I settled for the EF 24-105 F/4 L IS to compliment my EF 70-200 f/2.8 L IS and EF 300 f/4 L IS. I chose it for both the range that it covers, sharpness, IS and lighter weight than the EF 24-70 f/2.8. I shoot mostly outdoor and nature photography so the f/4 works fine for me at the moment. With the scratch I saved I picked up a EF 1.4x TC.

Understand that expensive cameras and lenses are sometimes "seized" at customs in Kenya and Tanzania. Plain old outright theft. Just be aware before you take any prized, expensive photographic gear to these areas. I know many pros who have lost long fast lenses at customs there.

i'm gonna be the discordant note here and suggest an ultrafast lens for night photography and landscapes. Consider a 50 1.2 or 1.4. So fast it'll burn your socks off, and its also the right focal length for landscapes.
i mean, stuff also happens at night in a safari right?